Aduro Biotech Announces FDA Clearance of Investigational New Drug Application to Evaluate the Combination of ADU-S100 with PDR001 for the Treatment of Solid Tumors and Lymphomas

Early Phase 1 Dose Escalation Signals Support Advancement into Phase 1b in Second Half of 2017

Seattle, Washington, UNITED STATES

BERKELEY, Calif., June 01, 2017 (GLOBE NEWSWIRE) -- Aduro Biotech, Inc. (Nasdaq:ADRO), a biopharmaceutical company with three distinct immunotherapy technologies, announced today that the U.S. Food and Drug Administration (FDA) has cleared the Investigational New Drug application (IND) for ADU-S100 (also known as MIW815), a novel STING pathway activator, to be evaluated in combination with PDR001, Novartis’ investigational anti-PD-1 checkpoint inhibitor, for the treatment of advanced/metastatic solid tumors or lymphomas.  The Phase 1b study is expected to be initiated in the second half of 2017.

“The initial insights we have gained from the ongoing trial of ADU-S100, coupled with preclinical data that suggests an anti-cancer synergy between an anti-PD-1 checkpoint inhibitor and ADU-S100, underscores the importance of evaluating these two novel approaches to treating cancer in combination with one another,” stated Natalie Sacks, M.D., chief medical officer of Aduro.  “With the IND now cleared, working with Novartis, our STING program collaborator, we look forward to initiating a Phase 1b trial in the second half of the year to gain clinical insights into the STING/anti-PD-1 inhibitor combination for the treatment of multiple tumor types. At the same time, we will continue to evaluate the potential of ADU-S100 as a monotherapy in cutaneously accessible tumors as well as viscerally accessible tumors.”

The open label, global, multicenter Phase 1b study is designed to evaluate the safety and efficacy of ADU-S100 administered by intratumoral injection with PDR001 to patients with advanced/metastatic solid tumors or lymphomas.

Ongoing Phase 1 Dose Escalation Trial of ADU-S100 (MIW815) in Multiple Tumor Types
In May 2016, Aduro announced the initiation of the ongoing Phase 1, multicenter, dose escalation study designed to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics and anti-tumor activity of ADU-S100 (MIW815) in patients with cutaneously accessible metastatic solid tumors or lymphomas (see, identifier NCT02675439). The trial is ongoing and the company expects to expand into viscerally accessible lesions in the second half of 2017.

About STING Pathway Activator Platform
The Aduro-proprietary STING pathway activator product candidates, including ADU-S100 (MIW815), are synthetic small molecule immune modulators that are designed to target and activate human STING. STING is generally expressed at high levels in immune cells, including dendritic cells. Once activated, the STING receptor initiates a profound innate immune response through multiple pathways, inducing the expression of a broad profile of cytokines, including interferons and chemokines. This subsequently leads to the development of a systemic tumor antigen-specific T cell adaptive immune response.

About Aduro
Aduro Biotech, Inc. is an immunotherapy company focused on the discovery, development and commercialization of therapies that transform the treatment of challenging diseases. Aduro's technology platforms, which are designed to harness the body's natural immune system, are being investigated in cancer indications and have the potential to expand into autoimmune and infectious diseases. Aduro's LADD technology platform is based on proprietary attenuated strains of Listeria that have been engineered to express tumor-associated antigens to induce specific and targeted immune responses. This platform is being developed as a treatment for multiple indications, including mesothelioma, ovarian, lung and prostate cancers. Additionally, a personalized form of LADD, or pLADD, is being developed utilizing tumor neoantigens that are specific to an individual patient’s tumor. Aduro's STING Pathway Activator platform is designed to activate the STING receptor in immune cells, resulting in a potent tumor-specific immune response. ADU-S100 is the first STING Pathway Activator compound to enter the clinic and is currently being evaluated in a Phase 1 study in patients with cutaneously accessible metastatic solid tumors or lymphomas. Aduro’s B-select monoclonal antibody platform includes a number of immune modulating assets in research and preclinical development. Aduro is collaborating with leading global pharmaceutical companies to expand its products and technology platforms. For more information, please visit

Cautionary Note on Forward-Looking Statements

This press release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our intentions or current expectations concerning, among other things, the combination of ADU-S100 (MIW815) with PDR001 for the Treatment of Solid Tumors and Lymphomas, the expansion of the ongoing Phase 1 trial into viscerally accessible lesions and the timing thereof,  the potential for our technology platforms, plans, the timing of our planned clinical trials and the potential for eventual regulatory approval of our product candidates. In some cases, you can identify these statements by forward-looking words such as “may,” “will,” “continue,” “anticipate,” “intend,” “could,” “project,” “expect,” “targeted” or the negative or plural of these words or similar expressions.  Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, our history of net operating losses and uncertainty regarding our ability to achieve profitability, our ability to develop and commercialize our product candidates, our ability to use and expand our technology platforms to build a pipeline of product candidates, our ability to obtain and maintain regulatory approval of our product candidates, our ability to operate in a competitive industry and compete successfully against competitors that have greater resources than we do, our reliance on third parties, and our ability to obtain and adequately protect intellectual property rights for our product candidates. We discuss many of these risks in greater detail under the heading “Risk Factors” contained in our quarterly report on Form 10-Q for the quarter ended March 31, 2017, which is on file with the Securities and Exchange Commission. Any forward-looking statements that we make in this press release speak only as of the date of this press release.


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